A recent article in The Guardian cites a revealing new study reported in the journal Cortex. Scientists found that sleep nearly doubles the chance of remembering previously forgotten information.
Study volunteers were asked to remember made-up words either before a night’s sleep or after 12 hours of being awake. Of the two groups, the “sleepers” were much better at recalling the words.
“Sleep almost doubles our chances of remembering previously unrecalled material,” says Dr. Nicolas Dumay, a psychologist from the University of Exeter. “The post-sleep boost in memory accessibility may indicate that some memories are sharpened overnight. This supports the notion that, while asleep, we actively rehearse information flagged as important.”
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